<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 设置分隔效果 每个框直接有间隔 gutter间隔的大小，span为每个栏的长度 -->
      <el-row :gutter="20">
        <el-col :span="10">
          <!-- 搜索与输入框 -->
          <!-- 输入绑定到queryInfo.query，搜索事件为获取列表getUserList -->
          <el-input placeholder="请输入查找姓名" v-model="queryInfo.query">
            <el-button slot="append" icon="el-icon-search" @click="search"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <!-- 添加用户 -->
          <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <!-- :data是绑定的渲染数据数组，border是边框线，stripe是斑马纹，lable是表头信息，prop对应的是后台返回的数据名称 -->
      <el-table :data="userList" border stripe>
        <!-- type="index" 索引列 -->
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态" prop="mg_state">
          <!-- 通过作用域插槽，接收了scope，那么就可以用scoper.row得到该行数据 -->
          <template slot-scope="scope">
            <!-- {{scope.row}} -->
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDiglog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <!-- size-change 切换每页显示多少条就会触发 
       current-change  页码值只要变化就会触发
       current-page 当前显示第几页 
      page-size    当前每页显示多少条-->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>
    <!-- 这是添加用户的对话框 -->
    <!-- :visible.sync表示是否弹出对话框，如果为false就关闭  rules 为验证规则，-->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClear">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password" type="password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email" type="email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile" type="tel"></el-input>
        </el-form-item>
      </el-form>
      <!-- 内容底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClear">
      <el-form :model="editForm" :rules="addFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClear">
      <div>
        <p>当前用户：{{userInfo.username}}</p>
        <p>当前角色：{{userInfo.role_name}}</p>
        <p>
          分配角色列表：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            ></el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo()">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  data() {
    //验证邮箱的规则  验证手机号与邮箱的两种方式
    var checkEmail = (rule, value, cb) => {
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;
      if (regEmail.test(value)) {
        return cb();
      }
      cb(new Error("请输入合法的邮箱"));
    };

    return {
      //获取用户列表的参数对象
      queryInfo: {
        query: "",
        pagenum: 1, //当前页码值，默认第一页
        pagesize: 2 //当前每页显示条数
      },
      userList: [],
      total: 0,
      addDialogVisible: false, //控制添加用户对话框的显示与隐藏
      //添加用户的表单数据
      addForm: {
        username: "",
        password: "",
        email: "",
        mobile: ""
      },
      //添加表单的验证规则
      addFormRules: {
        username: [
          { required: true, message: "请输入用户信息", trigger: "blur" },
          {
            min: 3,
            max: 10,
            message: "用户名的长度为3~10个字符之间",
            trigger: "blur"
          }
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          {
            min: 6,
            max: 15,
            message: "密码的长度为6~15个字符之间",
            trigger: "blur"
          }
        ],
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" }
        ],
        mobile: [
          { required: true, message: "请输入电话号码", trigger: "blur" },
          {
            pattern: /^1[3|4|5|7|8][0-9]\d{8}$/,
            message: "手机号格式不对",
            trigger: "blur"
          }
        ]
      },
      //控制修改用户对话框的显示与隐藏，默认关闭
      editDialogVisible: false,
      //查询到的用户信息对象
      editForm: {},
      //控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      //需要被分配角色的用户信息
      userInfo: {},
      //所有角色的数据列表
      rolesList: [],
      //已选中的角色Id值
      selectedRoleId: ""
    };
  },
  created() {
    this.getUserList();
  },
  //发起请求获取成员列表，其中async 与 await 是一对，用于简化console打印信息
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get("users", {
        params: this.queryInfo
      }); //请求地址为users,参数params
      if (res.meta.status !== 200) {
        return this.$message.error("获取用户列表失败！");
      }
      this.userList = res.data.users;
      this.total = res.data.total;
      console.log(res);
    },
    //监听pagesize改变的事件
    handleSizeChange(newSize) {
      // console.log(newSize)
      this.queryInfo.pagesize = newSize;
      this.getUserList();
    },
    //监听页码值改变的事件
    handleCurrentChange(newPage) {
      // console.log(newPage)
      this.queryInfo.pagenum = newPage;
      this.getUserList();
    },
    search() {
      this.queryInfo.pagenum = 1;
      this.getUserList();
    },
    //监听switch开关状态的改变，并通过aoiox传递
    async userStateChanged(userinfo) {
      console.log(userinfo);
      //访问接口地址，因为此处id是动态的，所以请求地址需要用反字符串 ` `
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      );
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state;
        return this.$message.error("更新用户状态失败！");
      }
      this.$message.success("更新用户状态成功！");
    },
    //监听添加用户对话框关闭事件,重置
    addDialogClear() {
      this.$refs.addFormRef.resetFields();
    },
    //监听修改对话框关闭事件,重置
    editDialogClear() {
      this.$refs.editFormRef.resetFields();
    },
    //点击按钮，添加新用户
    addUser() {
      //校验整个表单是否通过每项校验
      this.$refs.addFormRef.validate(async valide => {
        //如果校验失败就return出去，不发起
        if (!valide) return;
        //可以发起用户的网络请求
        const { data: res } = await this.$http.post("users", this.addForm);
        if (res.meta.status !== 201) {
          return this.$message.error(res.meta.msg);
        }
        this.$message.success(res.meta.msg);
        //隐藏添加用户的对话框
        this.addDialogVisible = false;
        //重新获取用户列表数据
        this.getUserList();
      });
    },
    //展示编辑用户的对话框
    async showEditDiglog(id) {
      const { data: res } = await this.$http.get("users/" + id);
      if (res.meta.status !== 200) {
        return this.message.error(res.meta.msg);
      }
      this.editForm = res.data;
      this.editDialogVisible = true;
    },
    //修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return;
        const { data: res } = await this.$http.put(
          "users/" + this.editForm.id,
          { email: this.editForm.email, mobile: this.editForm.mobile }
        );
        console.log(res);
        if (res.meta.status !== 200) {
          return this.$message.error(res.meta.msg);
        }
        this.$message.success(res.meta.msg);
        //提交成功后关闭修改页
        this.editDialogVisible = false;
        //重新获取用户列表数据
        this.getUserList();
      });
    },
    // 根据id删除用户
    removeUserById(id) {
      //如果用户确认删除，则返回值为字符串 confirm
      //如果用户取消删除，则返回值为字符串 cancel
      this.$confirm("此操作将永久删除该文件, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      })
        .then(() => {
          this.$http.delete("users/" + id).then(response => {
            console.log(response.data.meta.status);
            if (response.data.meta.status !== 200) {
              return this.$message.error(response.data.meta.msg);
            }
            this.$message.success(response.data.meta.msg);
            //强制为第一页
            this.queryInfo.pagenum = 1;
            //刷新页面
            this.getUserList();
          });
        })
        .catch(() => {
          this.$message({
            type: "info",
            message: "已取消删除"
          });
        });
    },
    //展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo;
      //在展示对话框之前，获取所有角色列表
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg);
      }
      this.rolesList = res.data;
      this.setRoleDialogVisible = true;
    },
    //点击按钮，分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error("请选择要分配的角色！");
      }
      const { data: res } = await this.$http.put(
        `users/${this.userInfo.id}/role`,
        {
          rid: this.selectedRoleId
        }
      );
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg);
      }
      this.$message.success(res.meta.msg);
      this.getUserList();
      this.setRoleDialogVisible = false;
    },
    setRoleDialogClear(){
      this.selectedRoleId=''
      this.userInfo ={}
    }
  }
};
</script>
<style lang="less" scoped>
</style>